This is a bit enhanced version of the “hello world” blink application for Arduino: traffic lights emulator. The top three LEDs control car traffic and the bottom two are fore pedestrians.
int carRedPin = 13;
int carYellowPin = 12;
int carGreenPin = 11;
int pedestrianRedPin = 10;
int pedestrianGreenPin = 9;
// The setup() method runs once, when the sketch starts
void [...]
